So, as the title says, is it safe to use any products containing silicone anywhere in the engine compartment, or could it cause problems with some sensor or something? Particularly my 2017 Nissan Frontier, with the v/6 and my 98 mustang 3.8 v/6. I have heard somewhere, that it is a big no no, and also that is not a problem. Can I get a professional opinion? I like to keep my engines and engine compartments looking neat and shiny if possible. Of course my 64 and 65 vehicles are no problem, as they don't have all this modern sensors and computers etc.